Portsmouth Rhode Island Weather Almanac
Saturday, February 20, 2021
Cloudy and Snow Flurries Morning, Mostly Cloudy Day to Cloudy PM, Windy and Continued Cold
Climate Normal Period Climate Record Period  
1991- 2020   1893 - 2021  
    February 20, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Temperature   33   35   40   -7   60   in 1930   20   in 2015  
Minimum Temperature   26   24   26   +0   44   in 1981   2   in 1950  
Average Temperature   30   30   33   -3   50   in 1930   14   in 1966  
 Month Avg Max Temperature   35.7   43.3   38.8   -3.1   44.5   in 1990   23.0   in 1979  
Month Avg Min Temperature   25.4   30.4   24.5   +0.9   30.4   in 2020   7.8   in 1979  
Month Average Temperature   30.6   36.8   32.1   -1.5   36.8   in 2020   15.4   in 1979  
Precipitation   T   .00   .13   .00   2.07   in 1924            
One Hour   .00   .00           .26   in 1988            
Hourly Rate   .00   .00           .26   in 2014            
Month Precipitation   2.16   2.75   2.39   -.23   6.48   in 1988   .25   in 1947  
Year Precipitation   4.12   4.79   6.06   -1.94   12.38   in 1979   2.33   in 1980  
Snow   T   0.0   0.4   -0.4   8.8   in 1921            
Month Snow   16.0   0.0   7.2   +8.8   26.4   in 2003   0.0   in 2020  
Season Snow   27.7   12.2   24.3   +3.4   61.1   in 1996   3.5   in 1989  
Snow Depth   5   0           23   in 2015            
HDD   35   35   32   +3   51   in 1966   15   in 1930  
Month HDD   684   556   659   +25   989   in 1979   556   in 2020  
Season HDD   3345   3321   3578   -233   4535   in 1918   2952   in 2016  
CDD   0   0   0   +0   0   in   0   in    
Month CDD   0   0   0   +0   0   in     0   in    
Year CDD   0   0   0   +0   0   in     0   in    
Maximum Dew Point   26   14   31   -5   53   in 1974   -7   in 1959  
Minimum Dew Point   14   7   15   -1   43   in 2018   -21   in 1950  
Average  Dew Point   20   11   23   -3   46   in 2018   -10   in 1959  
 Month Avg Max Dew Point   29.7   35.8   29.6   +0.0   39.6   in 2018   4.5   in 1979  
Month Avg Min Dew Point   16.2   21.3   13.1   +3.1   23.0   in 1984   -8.0   in 1979  
Month Average Dew Point   22.9   28.5   23.0   -0.1   29.9   in 2018   -1.8   in 1979  
    February 20, 2021     Record Record
Observed Daily Data   2021   2020   Norm   Depart   Highest Lowest
Maximum Humidity   95%   61%   82%   +13%   100%   in 2018   40%   in 1965  
Minimum Humidity   53%   35%   49%   +4%   97%   in 2018   19%   in 1990  
Average Humidity   74%   48%   66%   +8%   99%   in 2018   33%   in 1990  
Maximum Barometer   30.18   30.46   30.13   +00.05   30.63   in 2019   29.46   in 1964  
Minimum Barometer   29.94   30.33   29.76   +00.18   30.33   in 2020   28.82   in 1934  
Average Barometer   30.06   30.40   29.94   +00.12   30.41   in 2019   29.26   in 1972  
Average Wind   9.5   9.7   8.8   +0.7   22.4   in 1972   2.3   in 1980  
Direction   NNW   NW   NW       NW         SSE        
High Wind Gust   28   26   27   +1   61   in 1927   12   in 1980  
Direction   NNW   NW   NW       NE         SSE        
High Heat Index                                      
Wind Chill   14   12   16   -2             -24   in 1950  
Maximum Water Temp   37.9   36.3   38.0   -0.1   43.5   in 2012   32.1   in 2015  
Minimum Water Temp   36.3   34.9   36.4   -0.1   41.5   in 2012   31.8   in 2015  
Average Water Temp   37.1   35.6   37.2   -0.1   42.5   in 2012   32.0   in 2015  
Sunrise/ AM Twilight   6:31:31 AM   6:03:31 AM            
Sunset / PM Twilight   5:26:06 PM   5:54:06 PM            
Length Of Day   10:54:35                          
Special Conditions   Fog                                  
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